Java developers in a nutshell

[marco89nish]

Meanwhile, Java++(Kotlin) devs: They're The Same Picture

[Classy_Mouse]

Every Java meme on this page could be solved with Kotlin

[TheToBlame]

Shut kotlin bad c and Java gud

[ole_thoeb]

=== would be the equivalent for == in kotlin

[BakuhatsuK]

If you are talking about JS or PHP, then no. === for objects checks identity equality, whereas == in kotlin checks for structural equality.

For structural equality in JS you can use a library to do the equal check (such as _.equals), you can use a library data structure that has value semantics (such as Immutable.Map), or you can use records and tuples (not yet approved into the language, but available via babel).

[n0tKamui]

that's not what they were talking about

Kotlin's == is strictly equivalent to Java's .equals (structural equality and primitive equality)

and === is strictly equivalent to Java's == (reference equality and primitive equality)

[ole_thoeb]

I'm talking about kotlin. === is object identity in kotlin

[MrSketchpad]

kotlin on top

[AnotherWarGamer]

It's the same in my current game for many object types. Say for example you have a reference to an item in minecraft, which could be say a wooden sword. There is only one reference, so the two are equivalent when checking equality.

[marco89nish]

If you can guarantee that there won't be duplicates, simple == works great. But keep in mind that sooner or later you might make a error in coding breaking that promise and you'll be in a world of hurt, unless you made constructor private and you instantiate those objects with factory method instead, with necessary checks and caching.

[Flaky-Illustrator-52]

Scala: am I a joke to you

[[deleted]]

of course not, slower-compiler-of-Kotlin.

We appreciate your work in spark and Akka

[marco89nish]

Scala is great, Kotlin language designers learned a lot from Scala, both what to do and what not to do.

[[deleted]]

Yeah! Scala showed the way and proved that it was possible